diff --git a/mypy_primer/projects.py b/mypy_primer/projects.py
index b666916..7ecbabb 100644
--- a/mypy_primer/projects.py
+++ b/mypy_primer/projects.py
@@ -1162,6 +1162,7 @@ def get_projects() -> list[Project]:
             location="https://github.com/psycopg/psycopg",
             mypy_cmd="{mypy}",
             pyright_cmd="{pyright}",
+            ty_cmd="""{ty} check --config 'src.root="./psycopg"'""",
             deps=["pytest", "pproxy"],
         ),
         Project(